Aqua Lung SECOND STAGE User Manual

Name: Aqua Lung SECOND STAGE
Brand: Aqua Lung
Rating: 4 (1 reviews)

19 pages

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SERVICE MANUAL

SECOND STAGE

LEGEND LX

SUPREME

Rev. 02/2005

Questions and Answers:

J
James TorresAug 1, 2025
What to do if there is a leak or free flow at the 2nd stage of my Aqua Lung Diving Instrument?
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  Tiffany SmithAug 1, 2025
  If you're experiencing a leak or free flow at the 2nd stage of your Aqua Lung Diving Instrument, it could be due to several reasons. The MP might be too high or too low, in which case you should refer to the First Stage Troubleshooting Guide. Alternatively, the valve is worn or damaged, the seat is not correctly adjusted, the lever is bent, the sealing face of the seat is damaged, the spring is damaged, or the valve is not correctly adjusted. Replace the valve, readjust the seat, replace the lever, replace the seat, replace the spring, or readjust the lever and the valve, depending on the cause.
T
Tammy LeachAug 11, 2025
What to do if my Aqua Lung Diving Instrument has a water leak?
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  Stephen ThompsonAug 11, 2025
  If you notice a water leak in your Aqua Lung Diving Instrument, several issues could be the cause. It might be due to a hole in the mouthpiece, a damaged diaphragm, or a damaged exhalation valve. The venturi control O-ring could be dirty, worn, or damaged. The diaphragm might not be correctly fitted between the casing and the washer, the casing could be damaged or the O-ring or insert O-ring could be damaged. Replace the mouthpiece, replace the diaphragm, replace the valve, replace the O-ring. Disassemble the purge button and refit the assembly correctly. Check the sealing face of the exhalation valve and replace the casing. Replace the O-ring.